“…The selected CPI to predict DVWR in this research study included heart rate (HR), mean arterial blood pressure (MAP), central venous pressure (CVP), cardiac output (CO), respiratory rate (RR), mixed venous oxygen (SVO 2 ), oxygen saturation (54), pulmonary artery diastolic pressure (PAD), and pulmonary artery systolic pressure (PASP). The dependent variable of the study was DVWR, which is operationally defined as the condition in which the patient failed to wean from mechanical ventilation 8 hours after surgery (17,20,21,55,56).…”